00321nam a2200121Ia 4500008004100000020001800041082001100059082001000070100001900080245006900099260001000168260002100178230118s9999||||xx |||||||||||||| ||und||  a81-224-0208-9  a515.35  bCHA/E  aabchakrabarti 0aelement of ordinary differential equations and special functions  adelhi  bwiley estern ltd